Clean Water Act discharge permit · NPDES WYS000019
ALCHEM MINE, Green River, WY: NPDES WYS000019 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
ALCHEM MINE, held by Tata Chemicals North America, holds NPDES permit WYS000019. EPA’s file records it issued February 13, 2023 and expiring August 31, 2027. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | ALCHEM MINE |
|---|---|
| Permittee as filed | Tata Chemicals North America |
| NPDES ID | WYS000019 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | February 13, 2023 |
| Expiration date | August 31, 2027 |
| Issuing agency | WDEQ |
| Address | Green River, WY 82835 |
| Subwatershed | Town of Granger-Blacks Fork (HUC 140401070801) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 8With a violation of any kind
- 0With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| pH | 36 | 10 | 0 | ||
| Specific conductance | 18 | 5 | 0 | ||
| Alkalinity, total [as CaCO3] | 18 | 5 | 0 | ||
| Solids, total suspended | 18 | 5 | 0 | ||
| Sodium, dissolved [as Na] | 18 | 5 | 0 | ||
| Solids, total dissolved | 18 | 5 | 0 | ||
| Duration | 14 | 5 | 0 | ||
| Flow | 24 | 2 | 0 | ||
| Flow rate, instantaneous | 2 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES WYS000019.
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES WYS000019.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, WYS000019.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID WYS000019 there.
Nearby on the register
- Discharge permits in Green River
- Every permit record in Green River, A to Z
- Discharge permits in Wyoming
- Every permit record in Wyoming, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.